c = input('请输入您的密码：')
a = '0123456789'
b = 'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ'
len1 = len(c)
for i in range(len1):
   if (c[i] in a) and  (len1 <= 8):
      print('低级密码')
      break
   elif (c[i] in b) and (len1 <= 8):
      print('低级密码')
      break
   elif (c[i] in a,b)  and (len1 > 8):
       print('高级密码')
       break
   else:
      print('输入不符合要求，不能构成密码')
      break
